Got this before Christmas and hammered the shit out of it, and finally hit level 50 tonight and got 1000/1000 Achievements. I don't think I am going to bother with the DLC as I have so much else to play (Batman is still sealed from Xmas arggh!), but its a cracking game.
I played 99% of it in co-op and loved pretty much every minute of it, and although it could of done with more mission variation and some polish here and there, it was a fantastic 50+ hours
Things I'd love to see in the sequel:
- Weapon crafting. How cool would it be to build your own custom weapons?!
- On-screen map. Please.
- Quick menu for altering current missions
- More mission types and variation
- More varied environments would be lovely
- Being able to level up the vehicle - they get damaged way too easily later in the game
- More vehicles too, something like a Ghost or Banshee would be sweet!
Overall though, Borderlands was awesome